Question

当页面即将关闭时，我正在使用下面的自定义提醒。问题是，在用户单击自定义警报上的“确定”按钮之前，警报播放和页面关闭。缺少的是自定义警报，在用户单击“确定”按钮之前，它无法保持页面处于打开状态？

window.onbeforeunload = function() {
   {
      return custom_alert(head, txt);
   }


function custom_alert(head, txt) {
  var d = document;
  var c_obj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
  c_obj.id = "contain";
  c_obj.style.height = d.documentElement.scrollHeight + "px";
  var alertObj = c_obj.appendChild(d.createElement("div"));
  alertObj.id = "alert";
  if (d.all && !window.opera)
    alertObj.style.top = document.documentElement.scrollTop + "px";
  alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth) / 2 + "px";
  alertObj.style.visiblity = "visible";
  var h1 = alertObj.appendChild(d.createElement("h1"));
  h1.appendChild(d.createTextNode(head));
  var msg = alertObj.appendChild(d.createElement("p"));
  msg.innerHTML = txt;
  var btn = alertObj.appendChild(d.createElement("a"));
  btn.id = "close";
  btn.appendChild(d.createTextNode('ok'));
  btn.focus();
  btn.onclick = function() {
    c_obj.parentNode.removeChild(c_obj);
  };
  alertObj.style.display = "block";
}

Answer 1

我找到了一个解决这个问题的库：

http://t4t5.github.io/sweetalert/

官方提醒：alert("Oops... Something went wrong!");

更改的提醒：sweetAlert("Oops...", "Something went wrong!", "error");

此库解决了创建自己的警报的许多问题。

自定义JavaScript警报不会停止关闭页面

1 个答案: